Patents by Inventor Edward Broadwell

Edward Broadwell has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and apparatus for centrifuging sludge-containing liquids
    Patent number: 4014498
    Abstract: When a predetermined amount of separated sludge has accumulated in the peripheral part of the centrifuge rotor, a sensing device automatically opens outlets for the discharge of sludge. To provide substantially constant time intervals between consecutive openings of these sludge outlets, the feed rate to the centrifuge is automatically decreased in response to a shortening of these time intervals and automatically increased in response to a lengthening of these time intervals.
    Type: Grant
    Filed: February 23, 1976
    Date of Patent: March 29, 1977
    Assignee: Alfa-Laval AB
    Inventors: Edward Broadwell, William Charles Thompson